Fountain pen



Sept' 22, 1931- H. D. KELLOGG, JR 1,824,275

' FOUNTAIN PEN Filed March 11, 1926 F7@ e Ff@ 3 /f/ 4 llllf [mf/WORstfvlographic pen,

35 face draw 35 rel to partial u more fully descri Patented Sept. 22,1931 PATENT OFFICE HOSFOBD DUDLEY XELLOGG, JB., OF HAVEBIOBD,PENNSYLVANIA FOUNTAIN PEN Application led Iarch 1l, 1928. Serial lo.93,988.

My invention relates to improvements in Figgre 2 is an exterior view ofthe nozzle fountainpens and has for its ob ect to promem vide a pen ofthe type generally nown as a 1n w ich a positive ilow the writing fluidat and around the point is assured.

Further, said invention has for its object to provide a pen in which theink or writing fluid is delivered to the point through an an le nular orring-shaped opening above the point,

so that the fluid llows around the oint instead of throu h channelswithin the point.

Further, sai invention has for its object to provide a pen having anozzle inside which 15 the ink is carried to the point, and which may beeither fixed in posit1on with reference to thepoint of the pen or may beadjustable. to increase or decrease the opening through which the fluidflows onto the point, thus 3@ r lating the rate of flow.

urther, said invention has for its ob'ect to provide a point member ofcylindrica or conical shape or both and with or without`- fluid channelsor grooves cut upon its surthe writing fluid down to, and the point.

said invention rther, has for its object te rvide a nozzle member ofvaried crosssection, and slotted or drilled in varied man- 3@ ner toadmit air into the fluid reservoir and to remote the flow of fluid tothe point.

urther, said invention has for its object to provide a pen having avented nozzle member which ma be screwed back into the barh l orgfllxllly close;l the air1 von; o nin t ere yre vatingt era i -tyc-'inpl flov's through the nozzle and to the point. Other objects andadvantages of the ydevice are described and will `be apparentherelllfter.

To the attainment of the aforesaidolects my invention consists in thenovel deta' s 01E` construction and in the combination, vcon-A nectionandlarran ement of parts hereinafter d and then stated in the In theaccompanying drawings,

Figure 1 is a longitudinal, section through i the axis of the penshowing the barrel and 5 cap, nozzle and point.

' the general'construction shown 1n Fi point member.

Figure 5 is a longitudinal section through the axis of the assembled enin which both the pomt and nozzle mem ers are provided with threads andscrewed into the barrel, as contrasted with Fi 1, in which the pointmember is shown fixe in place with a smooth tapered fit, while only thenozzle is screwed to its position. Fig. 5 also shows an alternateconstruction for the tip of the nozzle which is cut in toward the pointinsteado outward away from it, forming a Venturisha ed outlet orifice.

i ure 6 is a longitudinal view of the point mem er provided with athreaded estal to screw into the barrel and with cap lar lines fittinginto the barrel.

Figure 8 is a sectional view on the axis of point showing theconstruction adapted to At e attachment of a rubber sack for aself-fillin desi n. A more'solid construction for t le ro -like erstemportion of the.

point member is also shown, with one of the variously formed conicalsurfaces which may be employed, extending from the thicker material atthe stem, to the'tip.

In said drawings,'Figures 1 to 4 give the basic construction enwhichjthe variations given in' Figures 5 to Y8 inclusive, are dependent.But the construction of the point 'and nozzle'members shown in thelatter iig-.-

than the more res A1 to 4 and are therefore stated as a special case andincluded in this specification. In the drawings, 1 is the barrel, 2 isthe main ink resures operates more perfectl ervoir, and 3 is the cap. 4is the nozzle member, which may be either threaded at 5 and screwedvarying distances into the barrel, or in case the variable feed featureis not desired, ma be setv in a fixed position with the tapered s ankshown in Fig. 7. The nozzle member ma be set either in the inside oroutside of t e barrel, the former case only being shown on the drawing,as the latter mentioned arrangement does not alterl the fundamentalconstruction. The nozzle may be machined or formed to a smooth finish onits inside surface 6, or may be serrated or grooved.

The discharge end of the nozzle 7 1s so formed that when the nozzle isfully screwed,

tly enlarging the annular opening 10A andrmitting a reater volume of inkto flow. y var ing t e position of the nozzle between tliese limits awide range 1n the rate of flow of the writing Huid .can be obtained.

The point member consists of a pedestal 11, which may be set in place inthe barrel with a tapered fit as. shown in-F1g. 1 or screwed in place asshown in Fig. 5. Ihe

pedestal has ample channels 12, Figures 3 and running lon 'tudinallywith reference to 4 the point mem er, through which the ink `flows fromthe reservoir into the nozzle cham- -ber 13, and thence throughtheannular orithe seat 14 to the tip 9. The seat 14 is so called because itis here that the nozzle 4 contacts with the point member to cut off theink flow when the nozzle is fully screwed into the y barrel. The pointmember may be supported on its pedestal within the nozzle member,effecting a desirable reduction in over-all len h of the pen andproviding more space Wit in the barrel for the conventional rubber inksack. In Fig. 2, the discharge end of the nozzl 7 is cut back andoutward away from the point. In Fig. 5, the discharge end 7 is cut backand inward from the point, a construction which alters the operatingcharacteristics of the pen. Needless to say, a delicate iiuid balanceexists between the length, shape and taper of the inner surface 6 of.the nozzle and nozzle chamber 13, the outer surface of the point memberat the stem 8, the seat14 and the tip 9, and the construction at thenozzle discharge opening 7. c

An im ortant detail of construction applied to t e point member is shownin Figures 5 and 6, in which capillary lines 15 are.

cut into the stem8. These capillary lines are preferably continuedacross the writing tip, and greatly assist in drawing the ink down to tothe tip 9 and facilitates the flow ofjink at f and near the ti f ThepreferredJ form of bearing for the pedestal 11 inside the barrel isfurnished by a three-surface support. This leaves large openings in theperiphery of the pedestal for the flow of ink from the reservoir to thepoint,

while providing substantial support for they point member. An extension17 over which the rubber sack fora self-filling type of pen can'beinserted, is shown in Figure 8. Fig. 7 shows two details of constructionapplied to the nozzle member. In this case the nozzle sets inside thebarrel with a tapered t, applicable where variable adjustment of ,the inflow is not desired. A slot 18 is here shown running back from the tip,to o n the ink chamber inside the nozzle and e ect desired changes inthe Huid flow to and at.

the point. A groove, or slot, 19, is applied to the shank 5 to permitair to'be drawn u into the barrel, thus venting the nozzle ing chamberand permitting the ink to ilow freely out the nozzle orifice to thepoint. It is not.,A

intended to convey the impression that the nozzle or point members neednecesarily have uniform conical or cylindrical surfaces, as herein shownfor simplicity and clarity yin the drawings. It should be understoodthe:

surfaces (6, 13, 8, 14, 9 and 7) mentioned in an earlier paragraph,which are in contact with the writing fluid, may have any curved,angular or irregular surface relationship to each other invention.

Having thus described mysaid invention, what I claim and desire toprotect by Letters Patent of the United States is 1. In a stylographic'en, in combinationfA a barrel for the ink supp y, a rigid point membersupported by a longitudinally channelled pedestal within the barrel andwith a solid core stem tapering to the writing tip, said pointmemberbeing surrounded below itsl pedestal by a nozzlel member supportedin, and having longitudinal air vents extending within, the barrel andtapering internally and externally to an outlet orifice in juxtapositionto, and partially enshrouding the end of said i writing tip.

2. In a stylographic pen the combination with a barrel adapted tocontain an ink supply, of a longitudinally channelled pedestal permittedwithin the sense of this dlsposed w1th1n an end thereof, a rigid pointing a shar 1y edged minimum diameter adjacent to t e end of the pointmember.

3. A nozzle member for a stylographic pen having longitudinal air ventscut in the supporting surface on the upper end and tapergraphic pen,tapering internally and externall from the upper supporting end to thedisc arge orifice, the endl surface of which discharge orifice is cutback externally forming a convex outlet surface.

6. A vented nozzle member for a stylographic en, tapering internally andexternally rom the upper supporting end to the discharge orifice,thereby forming a continuous ink chamber open at both ends, saiddischarge orifice being slotted with longitudinal slots cut thru theshell of said nozzle member to the ink chamber within.

7 In a stylographic pen comprising a barrel and a solid writing pointmember connected thereto, the combination therewithV of a longitudinallyadjustable nozzle member surrounding the point member and having airVents connected to the barrel, so that the nozzle member may be moved upinside the barrel and the vents to the atmosphere may be thereby variedfrom full open to closed position.

In testimony whereof, I have hereunto set my hand this 10th day of March1926.

H. DUDLEY KELLOGG, JR.

